Abstract An automatic pulse control means for use on machines employed for cutting paper, cardboard or the like, more especially for controlling the advance of the feed chuck of such machines, wherein the coupling disc of the magnetic coupling is constructed as a pulse generator, comprising teeth along the whole of its circumference which influence the field of a magnetic head in such a manner, that when one of said teeth comes within the range of said magnetic head the field of the latter is varied and generates a resulting pulse which operates an arbitrarily preset subtracting counter mechanism with the effect whereby when the zero position of the latter is reached, it transmits said pulse for the control of the magnetic coupling. The system may operate either as a cut-sequencing unit for executing cuts of uniform width when provided with a single counter, or for executing a cutting program featuring cuts of different width by providing a plurality of counters, on which different number of pulses and thereby different cutting widths can be preset by means of the preselector switch associated with the counter mechanism in both cases.
Automatic pulse control means for cutting machines for paper, cardboard, or the like, comprising magnetic clutch means including a rotatably coupling disk, said coupling disk having thereon pulse-producing means for producing signal pulses representative of the degree of rotation of said disk; subtracting counter means operatively associated with said pulseproducing means for counting the number of pulses produced and subtracting the number of pulses from a preset value, and for producing a driving pulse when said subtracting pulse reaches zero; and breaking magnet means operatively connected to said counter means and adapted to break said coupling disk upon receipt of a driving pulse from said counter means.
Claim 2
Dependent Claim
107 words
Automatic pulse control means for cutting machines for paper, cardboard, or the like, comprising magnetic clutch means including a rotatably coupling disk, said coupling disk having thereon pulse-producing means for producing signal pulses representative of the degree of rotation of said disk; subtracting counter means operatively associated with said pulseproducing means for counting the number of pulses produced and subtracting the number of pulses from a preset value, and for producing a driving pulse when said subtracting pulse reaches zero; and breaking magnet means operatively connected to said counter means and adapted to break said coupling disk upon receipt of a driving pulse from said counter means.
Claim 3
Dependent Claim
96 words
Automatic pulse control means according to claim 1, wherein said pulse-producing means comprises a plurality of teeth spaced about the periphery of said coupling disk, said pulse control means further comprising a stationary magnetic head positioned adjacent to and spaced slightly from the periphery of said coupling disk, whereby rotation of said coupling disk will cause said magnetic head to produce a single pulse each time one of said teeth comes into proximity with said magnetic head, said magnetic head being operatively connected to said subtracting counter means to transmit said pulses to said counter means.
Claim 4
Dependent Claim
50 words
Automatic pulse control means as defined in claim 2, further comprising preselector switch means for presetting a desired value into said subtracting counter means, whereby the number of said signal pulses required to return said subtracting counter to zero and hence to activate said breaking magnet means may be preselected.